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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">protect_ocr_trainf</span><span data-if="c" style="display:none;">protect_ocr_trainf</span><span data-if="cpp" style="display:none;">ProtectOcrTrainf</span><span data-if="dotnet" style="display:none;">ProtectOcrTrainf</span><span data-if="python" style="display:none;">protect_ocr_trainf</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">protect_ocr_trainf</span><span data-if="c" style="display:none;">protect_ocr_trainf</span><span data-if="cpp" style="display:none;">ProtectOcrTrainf</span><span data-if="dotnet" style="display:none;">ProtectOcrTrainf</span><span data-if="python" style="display:none;">protect_ocr_trainf</span></code> — Protection of training data.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>protect_ocr_trainf</b>( :  : <a href="#TrainingFile"><i>TrainingFile</i></a>, <a href="#Password"><i>Password</i></a>, <a href="#TrainingFileProtected"><i>TrainingFileProtected</i></a> : )</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>protect_ocr_trainf</b>(const char* <a href="#TrainingFile"><i>TrainingFile</i></a>, const char* <a href="#Password"><i>Password</i></a>, const char* <a href="#TrainingFileProtected"><i>TrainingFileProtected</i></a>)</code></p>
<p>
<code>Herror <b>T_protect_ocr_trainf</b>(const Htuple <a href="#TrainingFile"><i>TrainingFile</i></a>, const Htuple <a href="#Password"><i>Password</i></a>, const Htuple <a href="#TrainingFileProtected"><i>TrainingFileProtected</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>ProtectOcrTrainf</b>(const HTuple&amp; <a href="#TrainingFile"><i>TrainingFile</i></a>, const HTuple&amp; <a href="#Password"><i>Password</i></a>, const HTuple&amp; <a href="#TrainingFileProtected"><i>TrainingFileProtected</i></a>)</code></p>
<p>
<code>static void <a href="HRegion.html">HRegion</a>::<b>ProtectOcrTrainf</b>(const HString&amp; <a href="#TrainingFile"><i>TrainingFile</i></a>, const HTuple&amp; <a href="#Password"><i>Password</i></a>, const HString&amp; <a href="#TrainingFileProtected"><i>TrainingFileProtected</i></a>)</code></p>
<p>
<code>static void <a href="HRegion.html">HRegion</a>::<b>ProtectOcrTrainf</b>(const HString&amp; <a href="#TrainingFile"><i>TrainingFile</i></a>, const HString&amp; <a href="#Password"><i>Password</i></a>, const HString&amp; <a href="#TrainingFileProtected"><i>TrainingFileProtected</i></a>)</code></p>
<p>
<code>static void <a href="HRegion.html">HRegion</a>::<b>ProtectOcrTrainf</b>(const char* <a href="#TrainingFile"><i>TrainingFile</i></a>, const char* <a href="#Password"><i>Password</i></a>, const char* <a href="#TrainingFileProtected"><i>TrainingFileProtected</i></a>)</code></p>
<p>
<code>static void <a href="HRegion.html">HRegion</a>::<b>ProtectOcrTrainf</b>(const wchar_t* <a href="#TrainingFile"><i>TrainingFile</i></a>, const wchar_t* <a href="#Password"><i>Password</i></a>, const wchar_t* <a href="#TrainingFileProtected"><i>TrainingFileProtected</i></a>)  <span class="signnote">
            (
            Windows only)
          </span></code></p>
</div>
<div data-if="com" style="display:none;"></div>
<div data-if="dotnet" style="display:none;">
<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>ProtectOcrTrainf</b>(<a href="HTuple.html">HTuple</a> <a href="#TrainingFile"><i>trainingFile</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Password"><i>password</i></a>, <a href="HTuple.html">HTuple</a> <a href="#TrainingFileProtected"><i>trainingFileProtected</i></a>)</code></p>
<p>
<code>static void <a href="HRegion.html">HRegion</a>.<b>ProtectOcrTrainf</b>(string <a href="#TrainingFile"><i>trainingFile</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Password"><i>password</i></a>, string <a href="#TrainingFileProtected"><i>trainingFileProtected</i></a>)</code></p>
<p>
<code>static void <a href="HRegion.html">HRegion</a>.<b>ProtectOcrTrainf</b>(string <a href="#TrainingFile"><i>trainingFile</i></a>, string <a href="#Password"><i>password</i></a>, string <a href="#TrainingFileProtected"><i>trainingFileProtected</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>protect_ocr_trainf</b>(<a href="#TrainingFile"><i>training_file</i></a>: str, <a href="#Password"><i>password</i></a>: MaybeSequence[str], <a href="#TrainingFileProtected"><i>training_file_protected</i></a>: str) -&gt; None</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p>Obtaining training data for an OCR classifier can be a complicated and
time consuming activity. Thus, training data is valuable and there
might be the necessity to protect its usage. The general idea
is to prevent protected OCR training data from being
reviewed or modified in any way and to ensure that its usage, e.g.,
training an OCR classifier, is restricted by a user password.
</p>
<p>The approach in HALCON is to obtain OCR training data in the usual way,
then write it to an unprotected OCR training file using, e.g.,
<a href="write_ocr_trainf.html"><code><span data-if="hdevelop" style="display:inline">write_ocr_trainf</span><span data-if="c" style="display:none">write_ocr_trainf</span><span data-if="cpp" style="display:none">WriteOcrTrainf</span><span data-if="com" style="display:none">WriteOcrTrainf</span><span data-if="dotnet" style="display:none">WriteOcrTrainf</span><span data-if="python" style="display:none">write_ocr_trainf</span></code></a>, and afterwards create a new file containing
the OCR training data protected with a user password. Protected training
files can be used with a set of special operators
that also require the correct password in order to be able to process the
data, e.g., for training an OCR classifier.
</p>
<p>It is important to keep in mind that data in a protected OCR training
file cannot be reviewed or modified in any way, thus it is important to
keep the original, unprotected, training data files.
</p>
<p>Protected OCR training data can be used for training of multilayer
perceptron (MLP) classifiers and support vector machine (SVM) classifiers.
</p>
<p><code><span data-if="hdevelop" style="display:inline">protect_ocr_trainf</span><span data-if="c" style="display:none">protect_ocr_trainf</span><span data-if="cpp" style="display:none">ProtectOcrTrainf</span><span data-if="com" style="display:none">ProtectOcrTrainf</span><span data-if="dotnet" style="display:none">ProtectOcrTrainf</span><span data-if="python" style="display:none">protect_ocr_trainf</span></code> protects the OCR training data contained
in the file <a href="#TrainingFile"><i><code><span data-if="hdevelop" style="display:inline">TrainingFile</span><span data-if="c" style="display:none">TrainingFile</span><span data-if="cpp" style="display:none">TrainingFile</span><span data-if="com" style="display:none">TrainingFile</span><span data-if="dotnet" style="display:none">trainingFile</span><span data-if="python" style="display:none">training_file</span></code></i></a> and writes it to
the protected training data file <a href="#TrainingFileProtected"><i><code><span data-if="hdevelop" style="display:inline">TrainingFileProtected</span><span data-if="c" style="display:none">TrainingFileProtected</span><span data-if="cpp" style="display:none">TrainingFileProtected</span><span data-if="com" style="display:none">TrainingFileProtected</span><span data-if="dotnet" style="display:none">trainingFileProtected</span><span data-if="python" style="display:none">training_file_protected</span></code></i></a>.
The protection is done with the user password <a href="#Password"><i><code><span data-if="hdevelop" style="display:inline">Password</span><span data-if="c" style="display:none">Password</span><span data-if="cpp" style="display:none">Password</span><span data-if="com" style="display:none">Password</span><span data-if="dotnet" style="display:none">password</span><span data-if="python" style="display:none">password</span></code></i></a>. The
same password has to be used afterwards in order to use the protected
OCR training data, e.g., by 该算子s
<a href="trainf_ocr_class_mlp_protected.html"><code><span data-if="hdevelop" style="display:inline">trainf_ocr_class_mlp_protected</span><span data-if="c" style="display:none">trainf_ocr_class_mlp_protected</span><span data-if="cpp" style="display:none">TrainfOcrClassMlpProtected</span><span data-if="com" style="display:none">TrainfOcrClassMlpProtected</span><span data-if="dotnet" style="display:none">TrainfOcrClassMlpProtected</span><span data-if="python" style="display:none">trainf_ocr_class_mlp_protected</span></code></a> or
<a href="read_ocr_trainf_names_protected.html"><code><span data-if="hdevelop" style="display:inline">read_ocr_trainf_names_protected</span><span data-if="c" style="display:none">read_ocr_trainf_names_protected</span><span data-if="cpp" style="display:none">ReadOcrTrainfNamesProtected</span><span data-if="com" style="display:none">ReadOcrTrainfNamesProtected</span><span data-if="dotnet" style="display:none">ReadOcrTrainfNamesProtected</span><span data-if="python" style="display:none">read_ocr_trainf_names_protected</span></code></a>. Empty passwords (or passwords
containing the empty string) are not allowed. If the number of passwords
<a href="#Password"><i><code><span data-if="hdevelop" style="display:inline">Password</span><span data-if="c" style="display:none">Password</span><span data-if="cpp" style="display:none">Password</span><span data-if="com" style="display:none">Password</span><span data-if="dotnet" style="display:none">password</span><span data-if="python" style="display:none">password</span></code></i></a> equals 1, then every output file
<a href="#TrainingFileProtected"><i><code><span data-if="hdevelop" style="display:inline">TrainingFileProtected</span><span data-if="c" style="display:none">TrainingFileProtected</span><span data-if="cpp" style="display:none">TrainingFileProtected</span><span data-if="com" style="display:none">TrainingFileProtected</span><span data-if="dotnet" style="display:none">trainingFileProtected</span><span data-if="python" style="display:none">training_file_protected</span></code></i></a> is protected with that password,
otherwise the number of passwords has to be equal to the number of
input and output files and the output file at position n is protected
with the password at position n.
</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  <li>未经并行化处理。</li>
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="TrainingFile" class="parname"><b><code><span data-if="hdevelop" style="display:inline">TrainingFile</span><span data-if="c" style="display:none">TrainingFile</span><span data-if="cpp" style="display:none">TrainingFile</span><span data-if="com" style="display:none">TrainingFile</span><span data-if="dotnet" style="display:none">trainingFile</span><span data-if="python" style="display:none">training_file</span></code></b> (input_control)  </span><span>filename.read <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">str</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string)</span><span data-if="dotnet" style="display:none"> (<i>string</i>)</span><span data-if="cpp" style="display:none"> (<i>HString</i>)</span><span data-if="c" style="display:none"> (<i>char*</i>)</span></span>
</div>
<p class="pardesc">Names of the training files.</p>
<p class="pardesc"><span class="parcat">Default:
      </span>
    <span data-if="hdevelop" style="display:inline">''</span>
    <span data-if="c" style="display:none">""</span>
    <span data-if="cpp" style="display:none">""</span>
    <span data-if="com" style="display:none">""</span>
    <span data-if="dotnet" style="display:none">""</span>
    <span data-if="python" style="display:none">""</span>
</p>
<p class="pardesc"><span class="parcat">File extension:
          </span>.<code>trf</code>, .<code>otr</code></p>
</div>
  <div class="par">
<div class="parhead">
<span id="Password" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Password</span><span data-if="c" style="display:none">Password</span><span data-if="cpp" style="display:none">Password</span><span data-if="com" style="display:none">Password</span><span data-if="dotnet" style="display:none">password</span><span data-if="python" style="display:none">password</span></code></b> (input_control)  </span><span>string(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[str]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string)</span><span data-if="dotnet" style="display:none"> (<i>string</i>)</span><span data-if="cpp" style="display:none"> (<i>HString</i>)</span><span data-if="c" style="display:none"> (<i>char*</i>)</span></span>
</div>
<p class="pardesc">Passwords for protecting the training files.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="TrainingFileProtected" class="parname"><b><code><span data-if="hdevelop" style="display:inline">TrainingFileProtected</span><span data-if="c" style="display:none">TrainingFileProtected</span><span data-if="cpp" style="display:none">TrainingFileProtected</span><span data-if="com" style="display:none">TrainingFileProtected</span><span data-if="dotnet" style="display:none">trainingFileProtected</span><span data-if="python" style="display:none">training_file_protected</span></code></b> (input_control)  </span><span>filename.write <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">str</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string)</span><span data-if="dotnet" style="display:none"> (<i>string</i>)</span><span data-if="cpp" style="display:none"> (<i>HString</i>)</span><span data-if="c" style="display:none"> (<i>char*</i>)</span></span>
</div>
<p class="pardesc">Names of the protected training files.</p>
<p class="pardesc"><span class="parcat">File extension:
          </span>.<code>trf</code></p>
</div>
<h2 id="sec_result">结果</h2>
<p>If the parameters are correct, 该算子
<code><span data-if="hdevelop" style="display:inline">protect_ocr_trainf</span><span data-if="c" style="display:none">protect_ocr_trainf</span><span data-if="cpp" style="display:none">ProtectOcrTrainf</span><span data-if="com" style="display:none">ProtectOcrTrainf</span><span data-if="dotnet" style="display:none">ProtectOcrTrainf</span><span data-if="python" style="display:none">protect_ocr_trainf</span></code> 返回值 <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
    .
Otherwise an exception will be raised.
</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="write_ocr_trainf.html"><span data-if="hdevelop" style="display:inline">write_ocr_trainf</span><span data-if="c" style="display:none">write_ocr_trainf</span><span data-if="cpp" style="display:none">WriteOcrTrainf</span><span data-if="com" style="display:none">WriteOcrTrainf</span><span data-if="dotnet" style="display:none">WriteOcrTrainf</span><span data-if="python" style="display:none">write_ocr_trainf</span></a></code>, 
<code><a href="append_ocr_trainf.html"><span data-if="hdevelop" style="display:inline">append_ocr_trainf</span><span data-if="c" style="display:none">append_ocr_trainf</span><span data-if="cpp" style="display:none">AppendOcrTrainf</span><span data-if="com" style="display:none">AppendOcrTrainf</span><span data-if="dotnet" style="display:none">AppendOcrTrainf</span><span data-if="python" style="display:none">append_ocr_trainf</span></a></code>, 
<code><a href="concat_ocr_trainf.html"><span data-if="hdevelop" style="display:inline">concat_ocr_trainf</span><span data-if="c" style="display:none">concat_ocr_trainf</span><span data-if="cpp" style="display:none">ConcatOcrTrainf</span><span data-if="com" style="display:none">ConcatOcrTrainf</span><span data-if="dotnet" style="display:none">ConcatOcrTrainf</span><span data-if="python" style="display:none">concat_ocr_trainf</span></a></code>
</p>
<h2 id="sec_successors">可能的后置算子</h2>
<p>
<code><a href="read_ocr_trainf_names_protected.html"><span data-if="hdevelop" style="display:inline">read_ocr_trainf_names_protected</span><span data-if="c" style="display:none">read_ocr_trainf_names_protected</span><span data-if="cpp" style="display:none">ReadOcrTrainfNamesProtected</span><span data-if="com" style="display:none">ReadOcrTrainfNamesProtected</span><span data-if="dotnet" style="display:none">ReadOcrTrainfNamesProtected</span><span data-if="python" style="display:none">read_ocr_trainf_names_protected</span></a></code>, 
<code><a href="trainf_ocr_class_mlp_protected.html"><span data-if="hdevelop" style="display:inline">trainf_ocr_class_mlp_protected</span><span data-if="c" style="display:none">trainf_ocr_class_mlp_protected</span><span data-if="cpp" style="display:none">TrainfOcrClassMlpProtected</span><span data-if="com" style="display:none">TrainfOcrClassMlpProtected</span><span data-if="dotnet" style="display:none">TrainfOcrClassMlpProtected</span><span data-if="python" style="display:none">trainf_ocr_class_mlp_protected</span></a></code>, 
<code><a href="trainf_ocr_class_svm_protected.html"><span data-if="hdevelop" style="display:inline">trainf_ocr_class_svm_protected</span><span data-if="c" style="display:none">trainf_ocr_class_svm_protected</span><span data-if="cpp" style="display:none">TrainfOcrClassSvmProtected</span><span data-if="com" style="display:none">TrainfOcrClassSvmProtected</span><span data-if="dotnet" style="display:none">TrainfOcrClassSvmProtected</span><span data-if="python" style="display:none">trainf_ocr_class_svm_protected</span></a></code>, 
<code><a href="select_feature_set_trainf_mlp_protected.html"><span data-if="hdevelop" style="display:inline">select_feature_set_trainf_mlp_protected</span><span data-if="c" style="display:none">select_feature_set_trainf_mlp_protected</span><span data-if="cpp" style="display:none">SelectFeatureSetTrainfMlpProtected</span><span data-if="com" style="display:none">SelectFeatureSetTrainfMlpProtected</span><span data-if="dotnet" style="display:none">SelectFeatureSetTrainfMlpProtected</span><span data-if="python" style="display:none">select_feature_set_trainf_mlp_protected</span></a></code>, 
<code><a href="select_feature_set_trainf_svm_protected.html"><span data-if="hdevelop" style="display:inline">select_feature_set_trainf_svm_protected</span><span data-if="c" style="display:none">select_feature_set_trainf_svm_protected</span><span data-if="cpp" style="display:none">SelectFeatureSetTrainfSvmProtected</span><span data-if="com" style="display:none">SelectFeatureSetTrainfSvmProtected</span><span data-if="dotnet" style="display:none">SelectFeatureSetTrainfSvmProtected</span><span data-if="python" style="display:none">select_feature_set_trainf_svm_protected</span></a></code>
</p>
<h2 id="sec_see">参考其它</h2>
<p>
<code><a href="select_feature_set_trainf_mlp.html"><span data-if="hdevelop" style="display:inline">select_feature_set_trainf_mlp</span><span data-if="c" style="display:none">select_feature_set_trainf_mlp</span><span data-if="cpp" style="display:none">SelectFeatureSetTrainfMlp</span><span data-if="com" style="display:none">SelectFeatureSetTrainfMlp</span><span data-if="dotnet" style="display:none">SelectFeatureSetTrainfMlp</span><span data-if="python" style="display:none">select_feature_set_trainf_mlp</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
OCR/OCV</p>
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